213111134141 has 12 divisors (see below), whose sum is σ = 218232998172. Its totient is φ = 208106853696.

The previous prime is 213111134083. The next prime is 213111134143. The reversal of 213111134141 is 141431111312.

It can be written as a sum of positive squares in 2 ways, for example, as 13699766116 + 199411368025 = 117046^2 + 446555^2 .

It is not a de Polignac number, because 213111134141 - 2³⁰ = 212037392317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111134143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10005395 + ... + 10026671.

It is an arithmetic number, because the mean of its divisors is an integer number (18186083181).

Almost surely, 2^213111134141 is an apocalyptic number.

It is an amenable number.

213111134141 is a deficient number, since it is larger than the sum of its proper divisors (5121864031).

213111134141 is an equidigital number, since it uses as much as digits as its factorization.

213111134141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780 (or 26737 counting only the distinct ones).

The product of its digits is 288, while the sum is 23.

Adding to 213111134141 its reverse (141431111312), we get a palindrome (354542245453).

The spelling of 213111134141 in words is "two hundred thirteen billion, one hundred eleven million, one hundred thirty-four thousand, one hundred forty-one".